I-64 weather conditions near O Fallon, Illinois
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Seasoned Weather Conditions
Current Weather Conditions
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7 day weather forecast
Current condition: NA°F 2025-06-25T11:43:24-00:00
Tonight 2025-06-25, Isolated T-storms then Mostly Clear. Isolated showers and thunderstorms before 9pm. Partly cloudy, with a low around 75. South wind 3 to 6 mph. Chance of precipitation is 20%.
Thursday 2025-06-26, Sunny then Isolated T-storms. Isolated showers and thunderstorms after 4pm. Sunny, with a high near 95. Heat index values as high as 102. Southwest wind 5 to 8 mph. Chance of precipitation is 20%.
Thursday Night 2025-06-26, Partly Cloudy. Partly cloudy, with a low around 76. South wind around 6 mph.Friday 2025-06-27, Mostly Sunny then Chance T-storms. A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 93. Southwest wind 5 to 8 mph.
Friday Night 2025-06-27, Slight Chance T-storms. A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 74.
Saturday 2025-06-28, Chance T-storms. A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 93.
Saturday Night 2025-06-28, Slight Chance T-storms. A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 75.- Sunday 2025-06-29, Chance T-storms. A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 94.
Sunday Night 2025-06-29, Slight Chance T-storms then Chance Showers. A 40 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 74.
Monday 2025-06-30, Chance Showers then Chance T-storms. A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 91.
Monday Night 2025-06-30, Chance T-storms. A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 71.
Tuesday 2025-07-01, Chance Showers. A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 87.